Step regulatable utility knife



FIG. 1 is a front view of a step regulatable utility knife showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a bottom view. thereof;

FIG. 7 is a perspective view thereof; and,

FIG. 8 is another perspective view thereof. 

The ornamental design for the step regulatable utility knife, as shown and described. 